#504B70
Closest named color: Dusk (#4E5481). oklch(43.3% 0.061 289.8), rgb(80, 75, 112).
Aa
White text reads best on this color (8.13:1).
About this color
#504B70 is a dark, muted purple. In OKLCH its lightness is 43%, its chroma 0.061 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.033 away. White text reads best on it, at 8.13:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.58:1 |
| White text | 8.13:1 |
Values
| HEX | #504B70 |
| RGB | rgb(80, 75, 112) |
| HSL | hsl(248, 20%, 37%) |
| OKLCH | oklch(43.3% 0.061 289.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #504B70 | 8.13:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #504B70 | 2.58:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #504B70 text on white | 8.13:1 | AAA | Lc 88.1 | Fine for body text |
| #504B70 text on black | 2.58:1 | Fails | Lc -14.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D8D7E6
oklch(88.4% 0.02 289)
-
Step 300
300
#C0BDD7
oklch(80.9% 0.036 290.9)
-
Step 400
400
#9F9BC2
oklch(70.6% 0.057 289.6)
-
Step 500
500
#8882B3
oklch(63% 0.073 289.7)
-
Step 600
600
#726B9F
oklch(55.5% 0.08 289.7)
-
Step 700
700
#605988
oklch(49% 0.075 290.2)
-
Step 800
800 (this color)
#504B70
oklch(43.3% 0.061 289.8)
-
Step 900
900
#413D59
oklch(37.6% 0.048 290.5)
-
Step 950
950
#262434
oklch(27% 0.03 290)
#504B70 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #415072 | 0.025 |
| Deuteranopia (no green cones) | #414F6F | 0.025 |
| Tritanopia (no blue cones) | #495158 | 0.051 |
| Achromatopsia (no color) | #4F4F4F | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B70
#504B70
oklch(43.3% 0.061 289.8)
- #53542B
#53542B
oklch(43.5% 0.06 109.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #504B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.033
- Dusty Grape #545775 ΔE 0.036
- Twilight #4E518B ΔE 0.044
- YInMn Blue #415A77 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.066
- Dusk Blue #26538D ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.067
Use #504B70 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.